rocking motion

rockaRoo A company based in Pittsburgh, 4moms, built the rockaRoo to track a baby's weight and seat position hundreds of times per second, and replicate the rocking motion with a seat that pivots at the bottom.

摇摇机器人（rockaRoo）总部设于匹兹堡（Pittsburgh）的公司4moms建造了摇摇机器人rockaRoo，该设备可以感应婴儿的体重，每秒钟数百次地追踪婴儿的坐姿，并可通过一个底部活动的座椅反复摇摆。

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The sea's undulations, which had been creating a gentle rocking motion, now ceased.

使入觉得微微转动的大海波动现在也停止了。

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The sliding and overturning stability design methods of caisson breakwaters are classified into three categories of the static design method, the dynamic design method with no sliding and rocking motion allowed and the dynamic design method for controlling sliding distance and rocking angle.

将沉箱式防波堤滑移和倾覆稳定性设计方法分为三类：静力设计方法、不允许沉箱出现滑移和摇摆角的动力设计方法、控制沉箱滑移量和摇摆角的动力设计方法。

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A man with mirth is like a chariot with springs, in which one can ride over the roughest roads and scarcely feel anything but a pleasant rocking motion.

而欢乐的人就像一辆装有弹簧的战车，无论形式在多么崎岖的路上，带给车可的也只有舒适轻微的摇摆，而无任何不适。

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